diffusion definition anatomy
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Facilitated diffusion Diffusion refers to the net movement of molecules from higher to lower concentration. Diffusion may be a simple diffusion or facilitated diffusion. A simple diffusion is one in which that occurs unassisted. Facilitated diffusion in contrast is an assisted diffusion in a way that it requires a carrier molecule. For instance, polar molecules diffuse across a cell membrane through carrier molecules in the cell membrane.
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diffusion passive transport. the movement of molecules of a particular substance from regions of high concentration to regions of low concentration of that substance, i.e. down a CONCENTRATION GRADIENT. The rate of diffusion in gases is much greater than in liquids, due to differences in their molecular structure.
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- Diffusion. 1  Diffusion is the movement of a solute from an area of higher concentration to an area of lower concentration within a solvent. 2  For a given distance, a concentration gradient is equal to the higher concentration minus the lower concentration of a solute in a solution.
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diffusion diffusion. 1. The process of rapid random movement of the particles of a liquid or gas which eventually form a uniform mixture. 2. The mixing of substances due to the motion of their particles.
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- Diffusion is the chemical & biological process when molecules from a material move from an area of high concentration (where there are lots of molecules) to an area of low concentration (where there are fewer molecules).Diffusion usually happens in a gas or in a liquid.iffusion is the chemical & biological process when molecules from a material move from an area of high concentration (where there are lots of molecules) to an area of low concentration (where there are fewer molecules). Diffusion usually happens in a gas or in a liquid.
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- Cell Membranes: Diffusion and Osmosis Part 1: Diffusion Diffusion is a process by which molecules move into or out of cells. To diffuse into or out of a cell, molecules must pass through the cell membrane. Observing the diffusion process in real cells is difficult because they are too small to be seen easily.
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Structural Biochemistry/Lipids/Membrane Transport Diffusion is the process by which molecules migrate over the cell membrane from areas of higher concentration to areas of lower concentration. When the amounts of molecules become stabilized, this state is called equilibrium. This occurs through random molecular motion.
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Anatomy & Physiology Diffusion, Osmosis, Diffusion. Which results from the random motion and collisions of ions and molecules. Is a passive process. The net movement of a substance from an area of higher concentration to an area of lower concentration.
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Cell Membrane Definitions Facilitated diffusion. Transport of substances across a biological membrane from an area of higher concentration to an area of lower concentration by means of a carrier molecule. Since the substances move along the direction of their concentration gradients, energy is not required.
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diffusion The movement of atoms or molecules from an area of higher concentration to an area of lower concentration. Atoms and small molecules can move across a cell membrane by diffusion. Compare osmosis. The reflection or refraction of radiation such as light or sound by an irregular surface, tending to scatter it in many directions.
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Translations for facilitated diffusion Facilitated diffusion. Facilitated diffusion is a process of passive transport, with this passive transport aided by integral membrane proteins. Facilitated diffusion is the spontaneous passage of molecules or ions across a biological membrane passing through specific transmembrane integral proteins.
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What Is Diffusion in Science? Diffusion is the action of molecules moving from an area of high concentration to an area of lower concentration. It is caused by kinetic energy.
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Human Physiology/Cell physiology 1 diffusion The movement of particles (molecules or ions) from an area of higher concentration to an area of lower concentration.  glucose A simple sugar made by the body from food, which is used by cells to make energy in respiration.
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Diffusion Diffusion. Diffusion refers to the process by which molecules intermingle as a result of their kinetic energy of random motion. Consider two containers of gas A and B separated by a partition. The molecules of both gases are in constant motion and make numerous collisions with the partition.
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5 Things to Know About the New Social Security Claiming Rules Nov 10, 2015. The budget bill signed last week by President Obama included perhaps the most significant change in Social Security benefits since 1983. Back then, Federal Reserve chairman Alan Greenspan led public hearings that helped usher in key reforms.
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The Process of Osmosis in Cellular Activity Diffusion Across a Cell Membrane. Diffusion is the movement of a substance across a membrane. Substances diffuse across cell membranes in a process known as passive transport. This means that the cell does not expend any energy in transporting substances across the cell membrane.
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- Medical Definition of DIFFUSION. 1. : the process whereby particles of liquids, gases, or solids intermingle as the result of their spontaneous movement caused by thermal agitation and in dissolved substances move from a region of higher to one of lower concentration.2.efinition of DIFFUSION. 1. : the action of diffusing: the state of being diffused. 2. : prolixity, diffuseness. 3.
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The Importance of Diffusion to Living Organisms example of simple diffusion is osmosis. Facilitated diffusion on the other hand is dependant on carrier proteins to transport it across the membrane. Diffusion is essential for many organisms as it is a feature of a number of processes which control and supply vital substances to the body in order for basic survival.
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Diffusion An example of a situation in which bulk flow and diffusion can be differentiated is the mechanism by which oxygen enters the body during external respiration (breathing). The lungs are located in the thoracic cavity, which is expanded as the first step in external respiration.
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- An example of diffusion in biological system is diffusion of oxygen and carbon dioxide across the alveolar-capillary membrane in mammalian lungs.Word origin: From Latin diffusionem (accusative of diffusio), from verb diffundere. Related forms: diffusional (adjective). Compare: active transport, osmosis.n example of diffusion in biological system is diffusion of oxygen and carbon dioxide across the alveolar-capillary membrane in mammalian lungs. Word origin: From Latin diffusionem (accusative of diffusio), from verb diffundere.
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Diffusion Diffusion is the chemical & biological process when molecules from a material move from an area of high concentration (where there are lots of molecules) to an area of low concentration (where there are fewer molecules). Diffusion usually happens in a gas or in a liquid.
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What is the definition of diffusion? Diffusion. Physics and Chemistry. Diffusion is the movement of particles from an area of high concentration to an area of low concentration. Diffusion is not to be confused with osmosis, which is the movement of water through a semi-permeable membrane.
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Cell Membrane Definitions facilitated diffusion. Transport of substances across a biological membrane from an area of higher concentration to an area of lower concentration by means of a carrier molecule. Since the substances move along the direction of theirconcentration gradients, energy is not required.
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- Osmosis is a type of diffusion. Diffusion is where molecules spread out until they are evenly distributed in a medium, such as the air. The cell wall gives shape and structure to the cell. Inside all living cells, including bacteria, there are one or more chromosomes. These chromosomes contain all of the genetic information needed for the cell to stay alive and carry out all of the things that a cell does.
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- Physics and Chemistry. Diffusion is the movement of particles from an area of high concentration to an area of low concentration. Diffusion is not to be confused with osmosis, which is the movement of water through a semi-permeable membrane.
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- Example of diffusion in an animal cell. The cells in our body need glucose and oxygen for respiration. Both these are carried in the blood. When blood reaches the cells the molecules of glucose and oxygen diffuse out of the blood and into the cells. As cells use up the glucose and oxygen they produce waste chemicals and carbon dioxide. If these were to build up in the cells they would poison them, therefore they diffuse out of the cells into the blood.